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Add Ex: Reducing the size of the image using Alpine

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Daniel Romero 2015-03-25 15:42:22 -03:00
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FROM alpine:latest
MAINTAINER Daniel Romero <infoslack@gmail.com>
RUN apk update
RUN apk add ca-certificates ruby-dev build-base && rm -rf /var/cache/apk/*
RUN gem install t
ENTRYPOINT [ "t" ]

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alpine-t
=========
Docker image based on Alpine Linux ;)
### What is Alpine ?
Alpine Linux is a Linux distribution built around musl libc and BusyBox.
The image is only 5 MB in size and has access to a package repository
that is much more complete than other BusyBox based images.
More: [https://registry.hub.docker.com/_/alpine/](https://registry.hub.docker.com/_/alpine/)
### Why ?
Image based `ruby:latest` vs `alpine:latest`:
```
$ docker images
REPOSITORY TAG VIRTUAL SIZE
infoslack/alpine-t latest 161.4 MB
infoslack/t latest 781.5 MB
```